7.3 twin turbo Godzilla

Grit dog wrote:

400/700 beats 500/500 all day long up a hill.
We both matted the skinny pedals on the steep stretch. Him with 2500lb flatbed trailer. Me with 3500lb enclosed.
I walked away from him like walking away from a chick with herpes. .

Two problems with your test.
- We have no idea if your buddy was really getting 500/500 or just theorized it based on some rough calculations for boost pressure.
- Did he swap out the tranny to take advantage of the new power output? Gearing that works well running empty in a truck intended to mostly run empty, may have been horribly inadequate towing. If the truck can never get up in the RPM range for 500/500...of course, it can't put out 500/500. For all we know it may have been limited to 350/400 and of course the diesel that was professionally mated to the transmission would win out.

The difference with the 7.3, is it's designed to put out crazy HP and the newer 10speed transmissions can let the engine wind up to where it can use that 500/500. Big difference from a home brew 5.X L power plant.

Assuming Ford finishes this out and optimizes it for towing, I'd put my money on the 7.3 w/turbos over the diesel in a towing contest...but my guess is they don't do that because it would split the profitable diesel sales numbers.